Building walls and prefabricated reinforced concrete wall sections

ABSTRACT

A building wall made of prefabricated reinforced concrete wall sections features use of sections having spaced reinforced concrete panels that are cast integral with a lintel that overlies the cavity space between the panels. The reinforcing in the panels is interconnected by reinforcing means that extends through the cavity between the panels and the cavity is preferably filled with insulating material. The outer wall panel has a brick veneer surface that projects beyond the end edges of the section to serve in part to define in a wall a cavity for reinforced concrete column that embeds the ends of rods that reinforce and extend through the lintel.

United States Patent [1 1 Mauroner BUILDING WALLS AND PREFABRICATEDREINFORCED CONCRETE WALL SECTIONS [76] Inventor: Curtis Mauroner, 627 W.Concord,

Orlando, Fla. 32801 [22] Filed: Aug. 20, 1973 [21] Appl. No.: 386,830

[52] US. Cl. .1 52/259; 52/293; 52/389; 52/405; 52/432; 52/587; 52/600[51] Int. Cl. E04c 2/06 [58] Field of Search 52/293, 259, 389, 410,52/432, 405, 587, 583, 600

[56] References Cited UNITED STATES PATENTS 1,809,504 6/1931 Carvel52/314 X 2,126,301 8/1938 Wolcott i I i 52/600 2,157,271 5/1939Schmeller." 52/600 X 2,858,031 10/1958 Garmon i 52/293 X 3,251,1655/1966 Tyler 52/405 3,304,673 2/1967 Ramoneda 52/432 X 3,693,308 9/1972Trezzini 52/432 X 3,760,540 9/1973 Latoria et a1. 52/405 FOREIGN PATENTSOR APPLICATIONS 683,115 3/1964 Canada U 52/314 [451 May 6,1975

1,380,514 10/1964 France 252/259 OTHER PUBLICATIONS Journal of theAmerican Concrete Institute, pp. 149-164, Oct, 1954.

Primary Examiner-Alfred C. Perham Attorney, Agent, or FirmRoger LvMartin, Esquire [57] ABSTRACT A building wall made of prefabricatedreinforced concrete wall sections features use of sections having spacedreinforced concrete panels that are cast integral with a lintel thatoverlies the cavity space between the panels. The reinforcing in thepanels is interconnected by reinforcing means that extends through thecavity between the panels and the cavity is preferably filled withinsulating material. The outer wall panel has a brick veneer surfacethat projects beyond the end edges of the section to serve in part todefine in a wall a cavity for reinforced concrete column that embeds theends of rods that reinforce and extend through the lintel.

8 Claims, 11 Drawing Figures PATENTEUHAT Ems SHEET 3 OF 4 1 BUILDINGWALLS AND PREFABRICATED REINFORCED CONCRETE WALL SECTIONS The inventionrelates to building walls made from prefabricated reinforced concretewall sections and to prefabricated wall sections formed from concreteand other cementitious materials.

The construction of building walls from precast reinforced concrete wallsections is known and it is also know to cast the concrete wall sectionsin a horizontal position in suitable forms. The horizontal casting ofsuch wall sections has several advantages among which may be mentionedthe savings in labor costs that are involved in providing decorativeexterior wall surfaces and in providing finished interior wall surfaceson wall structures that are otherwise assembled and erected. as forexample, from construction block, brick or wall framing. Thus when awall section is cast horizontally in a suitable form, the upper surfaceof the cast concrete may be finished by a mason before the concretehardens and thereafter serve without further labor costs as the interiorwall face or surface of the assembled wall structure. Similarly, adecorative exterior wall face or surface may be embodied in such castwall sections by pouring the concrete over suitably oriented brick orstone that thereafter provides a decorative exterior wall face in thewall structure.

There are several problems that are resident in the use of precast wallsections. For one, there is a need in most cases for some type ofthermal and/or moisture barrier between the inner and outer facialsurfaces of the wall section. To be effective, such a barrier must besubstantially coextensive with the inner wall surface that is beingprotected from the moisture and/or heat transfer. The barrier may beformed by providing a cavity in the cast concrete structure of thesection as by casting spaced apart interior and exterior concrete panelsin the wall section. However this has proven difficult to accomplish inpractice without the use of concrete structure that interconnects thespaced wall panels and thereafter serves as a capillary route for thetransfer of moisture from the exterior to the interior panels.

Yet another problem that has detracted from the use of cast concretewall sections is the need heretofore for special devices and appliancesin order to rigidly tie in and fix the cast wall sections together inthe assembled wall structure. Such devices and appliances usually takethe form of a metal-type structure that is rigidly fastened to theadjacent wall sections through the use of bolts or similar fastenerswhich are so-cast into the concrete structure of the wall section as toproject outwardly therefrom at a suitable position for the attachment ofthe metal device or applicance. The fasteners in such cases usuallyproject from one or the other of the faces of the cast wall section andthis arrangement makes it difficult to handle the heavy concretesections without damaging the structure through an inadvertententanglement with the outwardly projecting element.

A general object of the invention is to provide an improvedprefabricated reinforced concrete wall section. Yet another object ofthe invention is to provide wall sections of the type contemplated thathave a cavity for housing material that serves as a barrier through thetransfer of heat and moisture between spaced reinforced concrete panelsand which embodies a minimum amount of interconnecting concretestructure that can serve as a capillaceous route for transfer ofmoisture from one panel to the other. Yet another object of theinvention is to provide wall sections of the type contemplated that canbe fixed together in the final assembly of the building wall without theneed for special devices or appliances for securing the sectionstogether. A further object is to provide prefabricated wall sectionsthat can be fixed together in the assembled structure by simply pouringa reinforced concrete column between the adjacent sections. A specificobject of the invention is to provide a reinforced precast wall sectionthat greatly reduces the labor requirements for forming the sections andfor thereafter assembling the wall sections in a finished wallstructure.

ln accord with the invention, the concrete structures of the panels thatare spaced apart to provide the cavity in the wall section are joinedand cast integral with the concrete structure of an elongated lintelbeam component of the section and this lintel beam component is soarranged when the section is upright and supported on a foundation as tobe horizontally arranged and to overlie the cavity space between thepanels. The concrete structures of the panels and lintel are reinforced,and the section is provided with elongated elements that interconnectthe reinforcing that is used in the spaced panels and extend through thecavity space between the panels. The cavity between the panels in thecast section is preferably filled with a suitable thermal insulatingmaterial that is impervious to water, and this material serves tomaintain the spaced relation between the cementous materials that areused in casting the spaced panels on a horizontally arranged formtherefor. The arrangement has certain advantages in that although thewall panels of the section are interconnected by a concrete structure inthe upper reaches of the section, the normal roof overhang ofa building,will usually protect the upper reaches of the section from directencounter with moisture while below the cast concrete lintel theconcrete panels are fully spaced apart and devoid of cementousinterconnections. To provide the desired rigidity below the lintel beamin the cast wall section, the reinforcing used in the concrete wallpanel is interconnected by elongated reinforcing elements that tie inthe concrete reinforcing structure and extend through the cavity betweenthe panels.

The lintel beam, as will be subsequently seen. is cast about reinforcingrods that project from the opposite ends of the beam. This arrangementenables the sections to be assembled and secured together in thebuilding wall structure by casting a vertical column between theadjacent sections. The rods under such circumstances are tied into thereinforcement used in the casted in place column, and the concretestructure of the column embeds the lintel rod ends to provide a rigidtie in between the adjacent sections in the wall structure.

One aspect of the invention has to do with the provision of a brickveneer surface on the outer panel of the section and wherein the veneerincludes bricks that project beyond the ends of the section. This, aswill be subsequently seen, permits a corner wall structural arrangementthat defines a space in which a column can be formed with a minimumamount of labor for establishing the form for the column.

The novel features which are believed to be characteristic of thisinvention are set forth with particularity in the appended claims. Theinvention, itself. however, both as to its organization and method ofoperation, to-

gether with further objects and advantages thereof, may best beunderstood by reference to the following description taken in connectionwith the accompanying drawings, in which:

FIG. 1 is a plan view of a reinforced concrete wall section embodyingthe principles of the invention and as seen in a horizontally arrangedform in which the section is cast;

FIG. 2 is a section view through the form at the head end of the castsection as seen along the Lines 2-2 of FIG. 1;

FIG. 3 is a section view through the form at the foot end of the sectionas seen along the Lines 33 of FlG.

FIG. 4 is a section view through the form at one of the opposite ends ofthe lintel as seen along the Lines 4-4 of FIG. 1;

FIG. 5 is a section view through the form at the foot end of the sectionas seen along the Lines 55 of FIG. 1;

FIG. 6 is a section view through the form as seen along the Lines 6-6 ofFIG. 1;

FIG. 7 is an isometric view of a fragment of the form seen in FIG. 1 andillustrates certain rib components that serve to shape the mortar jointsin a brick veneer surface covering of the section;

FIG 8 is an isometric view of a fragment of certain reinforcings for oneof the cast concrete panels of the section as seen with attached metalelements used for tying in the reinforcing used in the spaced panels;

P16. 9 is an end view of the section as seen when supported upright on afoundation for the wall structure;

FIG. 10 illustrates the arrangement of two of the cast sections in theformation of a corner portion of an exte rior wall assembled from thesections, certain parts being broken away and others presented in anexploded arrangement to facilitate an understanding of the constructionof the corner portion; and

FIG. 11 illustrates two cast sections joined in end to end relation.

Reference is first made to FIGSv 1 through 6 and wherein a form for usein casting the wall section is designated at 10. Form 10 includes arectangular bottom plate 11, opposite end walls 12 and 13, and oppositeside walls 14 and 15 that are detachably secured together to provide ashallow open top, box-like structure in which the wall section isfabricated and formed.

Wall section 20 has a brick veneer covering 2] at the exterior side face32 of the section and the end bricks 23 in every other course of theveneer covering 21 project beyond the opposite end surfaces 22 of theconcrete structure of the section as will be subsequently seen. Toaccommodate this arrangement and contain the concrete during the castingprocedure, form 10 is equipped with internal walls 16 and 17 that areoffset from the adjacent end walls 12 and 13 and detachably secured attheir opposite ends to the side walls 14 and 15. These interior walls 16and 17 have spaced generally rectangular cutouts 18 which accommodatethe end bricks 23 that project beyond the end surfaces 22 that areformed against the internal walls 16 and 17 during the castingprocedure.

To facilitate the orientation of the bricks in the veneer structureduring the fabrication of the section and to shape the surfaces of themortar joints between the bricks and the veneer structure, the bottomplate 11 of the form 10 has a plurality of ribs 24 that are spaced apartin a parallel arrangement and fixed to the upper surface 29 of the plate11. These ribs 24 serve to main tain the space between the brick courses25 when the wall section is cast and form or shape the recessed mortarbed joints 26 in the finished covering 21. The plate 11 also has shortribs 27 that are spaced apart and fixed to the surface 29 so as tomaintain the spacing between the bricks in each course during theformation of the covering and similarly form or shape the mortared headjoints 28 between bricks in the finished veneer covering 21.

Before explaining the process of fabricating and forming the wallsection 20, the general structure of the section should be noted.Structurally, the wall section 20 includes a pair of flat, reinforcedconcrete wall panels 30 and 31 which have a generally rectangularconfiguration. The panels are spaced apart in the structure of the wallsection in a face to face arrangement and are generally located at theinterior and exterior side faces or surfaces 32 and 33 of the section.The space or cavity 34 between the panels 30 and 31 is preferably filledwith a suitable material that forms a thermal and moisture barrierbetween the panels. In the illustrated embodiment the barrier is made upof a plurality of flat rectangular blocks 35 of foam and polymerizedstyrene that are arranged in an edge to edge relation and embedded inthe concrete structure of the section during its fabrication. Otherinsulation materials may, of course, be used, such as fibrous glassinsulating materials, but foam materials such as the foam polystyrenesor polyurethanes are preferred because of their superior insulatingqualities and because of their substantial incompressibility under theweights of the concrete that are involved in casting and forming theconcrete sections.

In addition to the panels 30 and 31, section 20 has an elongatedreinforced concrete lintel component 36 that extends between theopposite end surfaces 22 and is supported by the panels 30 and 31 whenthe section is arranged upright as seen in FIG. 9. The lintel 36 undersuch circumstances overlies the cavity 34 in its span between theopposite ends 22 of the concrete structure.

The concrete structure 37 of the outer wall panel 30 is suitablyreinforced in the illustrated embodiment as by means of a wire mesh 38that is embedded in the structure 37 during the casting procedure. Theconcrete structure 39 of the inner wall panel 31 is also suitablyreinforced, and in the case of the embodiment illustrated, the structure39 is reinforced by means of elongated metal rods 40 and 41 that areembedded in the structure 39 during the casting procedure. Rods 40 arespaced apart and extend vertically when the section 20 is supportedupright on a foundation while rods 41 extend horizontally under suchcircumstances.

The concrete structure 42 of the lintel beam 36 is in part reinforced byportions of the wire mesh 38 and vertical rods 40 which extend into thebeam area of the structure but it is mainly reinforced by a plurality ofelongated metal rods 43. These rods 43 are spaced apart and embedded inthe structure 42 as seen in P16. 2, and are horizontally arranged whenthe section is mounted upright on a foundation. The opposite endsurfaces 45 of the concrete structure 42 lie in parallel planes that arecommon to the adjacent opposite side edge surfaces 46 and 47 of thepanels 30 and 31, and the opposite ends 48 of these rods 43 projectlaterally of the end surfaces 45.

The concrete structures 37 and 39 of panels 30 and 31 are integrallyjoined at their upper portions 49 and 50 to the concrete structure 42 oflintel 36 by the casting procedure used in forming the wall section.Below the lintel 36, the reinforcing components of the panels areinterconnected by a plurality of elongated metal elements 51. Theseelements 51 are spaced apart and extend transversely of the sectionthrough the cavity 34 between the panels 30 and 31. As seen in FIGS. 2through 4, each of these elements 51 has opposite end portions 52 whichare embedded in the concrete structures 37 and 39 and which are securedto the metal reinforcing means embedded in these concrete structures.These elements 51 serve to rigidly tie the panels together below thelintel and extend through the blocks 35 of insulation material that isdisposed in the cavity 34, as illustrated in the figures.

The outer panel 30 of the section 20 has a brick veneer covering 21 thatcovers the outer surface 53 thereof for decorative purposes. The spaces54 between the bricks 55 of the veneer 21 are filled with mortar 66 inthe process of forming the wall section and which not only serves tojoin the bricks together in the joint areas of the veneer but which isintegrally joined with the concrete structure 37 of the panel in thecasting procedure used in forming the section. The veneer covering inthe embodiment as previously pointed out, includes bricks 23 thatproject beyond the end sur faces 22 of the concrete structure of thesection and which as will be subsequently seen, cooperate in certainarrangements of the sections to define a space in which a reinforcedconcrete column may be poured to tie in adjacent sections in the wallstructure.

The section 20 is fabricated and formed by a sequence of steps thatfirst involve a placement of the bricks 55 for the veneer covering 21 inthe recesses 56 that are formed by the ribs 24 and 27 at the uppersurface 29 of the bottom plate 11 of form 10. Thereafter the internalwalls 16 and 17 are positioned in the form with the end bricks 23projecting through the cutouts l8 and with the end bricks in the coursesadjacent thereto flush against the wall portions 57 that lie between thecutouts 18. The cutouts are, of course, pro vided to accommodate thestaggered arrangement of the bricks in adjacent courses shown in theillustrated embodiment. it is within the purview of the inventionhowever to provide a veneer arrangement where the head joints arevertically aligned in each course and under such circumstances ofcourse, the internal walls of the form would be adapted to permit abouthalf of each end brick in the courses to project laterally of the endsurfaces 22 of the concrete structure.

After the walls 16 and 17 are assembled in the form, the spaces 54between the bricks 55 are filled with mortar to at least the inner face59 level of the bricks 55 that are supported on the plate 11. This, ofcourse, transpires between the internal walls 16 and 17 of the form inthe illustrated embodiment, and basically provides the bed and headjoints 26 and 28 in the finished veneer structure 31 at the surface 53of the outer panel 30.

After the joint areas 54 have been filled with mortar 66, the wire mesh38 is placed in the form between the walls 16 and 17 and is suitablyspaced above the inner face level 59 of the bricks so as to thereafterassume an embedded position in the concrete structure 37 of the outerpanel 30 which is intermediate the faces thereof. It may be pointed outthat the tie elements 51 are previously attached to the mesh 38 asillustrated in FIG. 8. This is accomplished by preferably bending one ofthe opposite ends 52 of each tie 51 around an intersect of the meshwires 60 and in a manner such that all of the ties 51 are spaced apartand project laterally of one side of the mesh as seen in FIG. 8. Hencewhen the mesh is placed in the form 10, the ties project upwardly tofacilitate the placement of the insulation blocks in the form once theconcrete for the panel 30 has been poured.

After the mesh 38 with attached ties 51 is placed in the form 10,concrete is poured into the form between the interior walls 16 and 17 tothe level contemplated for the interior surface 58 of the outer panel30. Part of this concrete of course flows into the structural area ofthe lintel 36 at the head end of the section as will be evident from aconsideration of FIG. 2. After the concrete has been floated to theproper level of the contemplated interior surface 58, the blocks 35 ofinsulation material are positioned in the form to establish the cavityarea in the finished section. In doing this, the blocks 35 are impaledor pierced by the elongated tie elements 51 so that after the blocks 35are arranged in place, the upper ends of the ties project upwardly ofthe insulation to facilitate their attachment to the reinforcing rods 40and 41 of the inner panel 31 The elongated blocks 35 are, of course,placed in an edge to edge relationship in the form as generallyillustrated in FIG. 1 and are, of course, offset from the head end sidewall 14 to accommodate the position of the lintel. It should also benoted that the insulation material is arranged flush against the sidewall 15 and flush against the interior walls 16 and 17 between thelintel and foot end of the section so that the cavity area in thefinished section basically communicates with the exterior of the castsection at the foot end of the section and along the opposite endsurfaces 22 thereof.

Once the insulation blocks have been appropriately placed in the form,the reinforcing rods 40, 41 and 43 for the inner panels 31 and lintel 36are suspended from the walls of the form 10. Thus, the internal walls 16and 17 are provided with aligned holes 61 to receive the opposite ends48 of the reinforcing rods 43 for the lintel 36 (see FIG. 4) and withaligned holes 62 to accommodate the opposite ends of the horizontal rods41 for panel 31. Similarly, the side walls 14 and 15 of the form havealigned holes 63 that accommodate the opposite ends of the vertical rods40 employed for reinforcing the inner panel 31. The head side wall 14 ofthe form also has a pair of spaced openings, not shown, to accommodate apair of anchors 64 that are embedded in the lintel and equipped witheyelets 65 to facilitate the lifting and handling of the section.

After the anchors 64 and the rods 40, 41 and 43 are placed in the form,the upper ends of the ties 51 are bent around and securely tied at theintersects to the rods 40 and 41 so as to provide a tying structurebetween the concrete reinforcing means used in the spaced panels 30 and31. Once the reinforcing means used in the panels is tied in, concreteis poured into the form and onto the insulation blocks 35 to a level ofthe contemplated interior side face 33 of the section 20. This concretefills the balance of the space for the lintel beam as well as thecontemplated area for the internal panel 31 and once the concrete hasbeen floated the interior side face 33 of the section can be finished bythe mason.

ln fabricating and forming the section, it is preferable to pour theconcrete for the outer wall panel before the mortar between the brickshas cured so as to provide an integral cementous bond between the mortarand concrete structure of the outer panel. Similarly, the pour ofconcrete for the inner panel and remainder of the lintel is preferablymade before the concrete in the outer panel has cured to any substantialextent so as to provide a similar integral cementous bond throughout theconcrete structure of the section.

After the concrete structure of the section has set and sufficientlycured to enable handling thereof, the walls of the form may bedismantled and the ends ofthe rods 40 and 41 which project beyond theend surfaces 22 and beyond the concrete structure at the head and footends of the section may be cut off.

FIG. illustrates the manner in which a pair of the concrete wallsections may be assembled on a foundation 72 in the formation of acorner wall portion 70 of an exterior building wall 71. As seen in thisfigure, the corner 74 of the foundation 72 is poured with a plurality ofvertically extending short lengths of reinforcing rods 73 that areanchored in the foundation at the foot end of a reinforced concretecolumn 75 that is poured in place to tie the wall sections 20 togetherin the corner structure 71. When the sections are elevated and placed inan upright supported position on the foundation 72, they are arranged ina perpendicular arrangement such that the end surface 22 of each section20 that is located at the corner 74 of the foundation lies in the planeof the interior side face 33 of the other wall section. The laterallyprojecting end bricks 23 under such circumstances are offset from theend surface 22 of the other wall section and the arrangement is such asto define an elongated vertically extending space 77 in which theconcrete column 75 may be poured. Once the perpendicularly arranged wallsections are supported in place on the foundation 72, verticallyextending rods 76 for reinforcing the concrete structure of the columnmay be inserted in the spaces and tied at their opposite ends to theanchored foundation rods 73 and to the end portions 48 of the lintelrods 43 of the sections. This may be accomplished through the use ofwire type metal ties 79 that can be manipulated to tie in the anchoredrods 73 and rods 76 through the space 80 between the end bricks 23 ofthe respective sections. Thereafter a mason can install bricks 8] in theintervening spaces 80 between the end bricks 23 using mortar, of course,to provide suitable bed and head joints for the installation. Thereafterthe space 77 for the column 75 may be filled with concrete to provide apoured in place concrete column that embeds the reinforcing structure inthe space, including the opposite ends 48 of rods 43 to fully anchor thewall section to the foundation and integrally tie the sections together.

It should be noted that at the column ends of the sections, the endsurfaces 45 of the lintels of the respective sections as well as theedge surfaces 46 and 47 of the panels of the sections confront the space77 in which the column is poured in place. With this arrangement thecavity space 34 communicates along the side edges of the panels with thespace occupied by the column. As such, when the column is poured theedge of the cavity area of each section is covered by concrete and thisarrangement permits some of the concrete used in the pour to pressslightly into the cavity area at the ends of the insulation material toaid in rigidly joining the section to the column. It may also bementioned at this point that if desired and in lieu of cutting off theends of the horizontal rods 41, these end portions may be left uncut toalso be embedded in the concrete structure of the column.

The wall sections 20 may also be joined in end to end relation whenarranged in a substantially coplanar arrangement on the foundation asseen in FIG. 11. Under such circumstances, the interior side faces 33are arranged in the same plane so that the adjacent end surfaces 22confront one another in the supported arrangement for the section. Oncethe sections have been supported on the foundation vertical concretereinforcing rods 82 may be inserted in the space between the confrontingsurfaces 22 and tied into the opposite ends 48 of the lintel rods 43 asby means of metal ties 83. Thereafter the space for the column 84 may beenclosed by a suitable plywood form 85 and by installing the bricks 86in the spaces between the end bricks 23 of the wall section. Followingthis the concrete can be poured into the space 84 to again form a columnbetween the sections.

While only certain preferred embodiments of this invention have beenshown and described by way of illustration, many modifications willoccur to those skilled in the art and it is, therefore, desired that itbe understood that it is intended herein to cover all such modificationsas fall within the true spirit and scope of this invention.

What is claimed as new and what it is desired to secure by LettersPatent of the United States is:

1. A prefabricated exterior wall section for a building, said sectionbeing supported upright on a foundation therefor and having interior andexterior side faces, said section comprising a pair of substantiallyrectangular, reinforced concrete panels that are spaced apart in a faceto face arrangement and respectively located at said interior andexterior side faces of said section, and an elongated horizontallyarranged reinforced concrete lintel that is supported by and overliesthe space between said panels; said lintel comprising a concretestructure and reinforcing means embedded in said concrete structure,each of said panels having an upper portion and comprising a concretestructure which is joined along its upper portion to and precastintegrally with the concrete structure of said lintel, and each of saidpanels comprising reinforcing means embedded in its concrete structure;said section further comprising a plurality of elongated metal elementsthat are spaced apart and extend through the space between said panels,each of said elements having opposite ends which are embedded in therespective concrete structures of said panels and secured to therespective reinforcing means embedded therein, the concrete structure ofsaid lintel having opposite end surfaces that lie in respective verticalplanes, and each of said panels having opposite side edge surfaces thatrespectively lie in said vertical planes.

2. A prefabricated exterior wall section in accord with claim 1comprising insulation means disposed in the space between said panels.

3. A prefabricated exterior wall section in accord with claim 1 wherethe reinforcing means of the lintel comprises elongated metal rodsembedded in the concrete structure thereof, each of said rods havingopposite ends that respectively project laterally outwardly of saidopposite end surfaces.

4. A prefabricated exterior wall section in accord with claim 1 wherethe one of said panels that is located at the exterior side face of thesection has a brick veneer surface covering that includes spaced bricks,and mortar which is located in the spaces between said bricks and whichis joined to and precast integrally with the concrete structure of saidone of said panels.

5. A prefabricated exterior wall section in accord with claim 4 wheresaid brick veneer surface covering includes bricks that projectlaterally outwardly of the opposite side edge surfaces of said one ofsaid panels.

6. An exterior building wall comprising a poured-inplace concrete cornercolumn that is supported upright on a foundation for said wall, and apair of prefabricated wall sections that are supported upright on thefoundation and define the space occupied by said corner column; each ofsaid wall sections having an exterior side face, and an interior sideface that is arranged in a vertical plane which is perpendicular to thevertical plane of the interior side face of the other wall section, andeach of said wall sections comprising a pair of substantiallyrectangular, reinforced concrete wall panels that are spaced apart in aface to face arrangement and respectively located at the interior andexterior side faces of its wall section, an elongated horizontallyarranged reinforced concrete lintel that is supported by the panels ofits wall section and overlies the space therebetween, and a plurality ofelongated metal elements that are spaced apart and extend through thespace between said wall panels; said lintel comprising a concretestructure having an end surface which confronts the space occupied bysaid corner column and which lies in the plane common to the interiorside face of the other wall section, and elongated horizontally arrangedconcrete reinforcing metal rods which are embedded in the concretestructure of the lintel and which have end portions that projectoutwardly from said end surface and into the space occupied by saidcolumn; each of said wall panels having an upper portion, and a sideedge surface which confronts the space occupied by said column and whichlies in the plane common to the interior side face of the other wallsection, and each of said wall panels comprising a concrete structurewhich is joined along its upper portion to, and precast integrally with,the concrete structure of said lintel, and reinforcing means embedded inits concrete structure, each of said metal elements having opposite endsrespectively embedded in the concrete structures of said wall panels andrespectively secured to the reinforcing means embedded therein, and theone of said panels that is located at the exterior side face of the wallsection having a brick veneer surface covering that includes spacedbricks, and mortar which is located in the spaces between said bricksand which is joined to and precast integrally with the concretestructure of said one of said panels, said bricks including bricks thatproject laterally outwardly of the side edge surface of said one of saidpanels and confront the space occupied by said column, and the spacebetween said panels being arranged to communicate along the side edgesurfaces thereof with the space occupied by said column.

7. An exterior building wall in accord with claim 6 where the spacebetween the panels of each of said wall sections is occupied byinsulation means.

8. An exterior building wall in accord with claim 6 where saidfoundation has reinforcing rods with ends projecting verticallythereabove and into the foot end of the space occupied by said column,where said column has elongated reinforcing metal rods connected to therod ends that project into the foot end of said space and to the endportions of the metal rods of said lintel. F

1. A prefabricated exterior wall section for a building, said sectionbeing supported upright on a foundation therefor and having interior andexterior side faces, said section comprising a pair of substantiallyrectangular, reinforced concrete panels that are spaceD apart in a faceto face arrangement and respectively located at said interior andexterior side faces of said section, and an elongated horizontallyarranged reinforced concrete lintel that is supported by and overliesthe space between said panels; said lintel comprising a concretestructure and reinforcing means embedded in said concrete structure,each of said panels having an upper portion and comprising a concretestructure which is joined along its upper portion to and precastintegrally with the concrete structure of said lintel, and each of saidpanels comprising reinforcing means embedded in its concrete structure;said section further comprising a plurality of elongated metal elementsthat are spaced apart and extend through the space between said panels,each of said elements having opposite ends which are embedded in therespective concrete structures of said panels and secured to therespective reinforcing means embedded therein, the concrete structure ofsaid lintel having opposite end surfaces that lie in respective verticalplanes, and each of said panels having opposite side edge surfaces thatrespectively lie in said vertical planes.
 2. A prefabricated exteriorwall section in accord with claim 1 comprising insulation means disposedin the space between said panels.
 3. A prefabricated exterior wallsection in accord with claim 1 where the reinforcing means of the lintelcomprises elongated metal rods embedded in the concrete structurethereof, each of said rods having opposite ends that respectivelyproject laterally outwardly of said opposite end surfaces.
 4. Aprefabricated exterior wall section in accord with claim 1 where the oneof said panels that is located at the exterior side face of the sectionhas a brick veneer surface covering that includes spaced bricks, andmortar which is located in the spaces between said bricks and which isjoined to and precast integrally with the concrete structure of said oneof said panels.
 5. A prefabricated exterior wall section in accord withclaim 4 where said brick veneer surface covering includes bricks thatproject laterally outwardly of the opposite side edge surfaces of saidone of said panels.
 6. An exterior building wall comprising apoured-in-place concrete corner column that is supported upright on afoundation for said wall, and a pair of prefabricated wall sections thatare supported upright on the foundation and define the space occupied bysaid corner column; each of said wall sections having an exterior sideface, and an interior side face that is arranged in a vertical planewhich is perpendicular to the vertical plane of the interior side faceof the other wall section, and each of said wall sections comprising apair of substantially rectangular, reinforced concrete wall panels thatare spaced apart in a face to face arrangement and respectively locatedat the interior and exterior side faces of its wall section, anelongated horizontally arranged reinforced concrete lintel that issupported by the panels of its wall section and overlies the spacetherebetween, and a plurality of elongated metal elements that arespaced apart and extend through the space between said wall panels; saidlintel comprising a concrete structure having an end surface whichconfronts the space occupied by said corner column and which lies in theplane common to the interior side face of the other wall section, andelongated horizontally arranged concrete reinforcing metal rods whichare embedded in the concrete structure of the lintel and which have endportions that project outwardly from said end surface and into the spaceoccupied by said column; each of said wall panels having an upperportion, and a side edge surface which confronts the space occupied bysaid column and which lies in the plane common to the interior side faceof the other wall section, and each of said wall panels comprising aconcrete structure which is joined along its upper portion to, andprecast integrally with, the concrete strUcture of said lintel, andreinforcing means embedded in its concrete structure, each of said metalelements having opposite ends respectively embedded in the concretestructures of said wall panels and respectively secured to thereinforcing means embedded therein, and the one of said panels that islocated at the exterior side face of the wall section having a brickveneer surface covering that includes spaced bricks, and mortar which islocated in the spaces between said bricks and which is joined to andprecast integrally with the concrete structure of said one of saidpanels, said bricks including bricks that project laterally outwardly ofthe side edge surface of said one of said panels and confront the spaceoccupied by said column, and the space between said panels beingarranged to communicate along the side edge surfaces thereof with thespace occupied by said column.
 7. An exterior building wall in accordwith claim 6 where the space between the panels of each of said wallsections is occupied by insulation means.
 8. An exterior building wallin accord with claim 6 where said foundation has reinforcing rods withends projecting vertically thereabove and into the foot end of the spaceoccupied by said column, where said column has elongated reinforcingmetal rods connected to the rod ends that project into the foot end ofsaid space and to the end portions of the metal rods of said lintel.